diff options
| -rw-r--r-- | cores/arduino/HardwareSerial.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/cores/arduino/HardwareSerial.cpp b/cores/arduino/HardwareSerial.cpp index eb2365f..7b056e9 100644 --- a/cores/arduino/HardwareSerial.cpp +++ b/cores/arduino/HardwareSerial.cpp @@ -62,10 +62,14 @@ struct ring_buffer { unsigned char buffer[SERIAL_BUFFER_SIZE]; - volatile unsigned int head; - volatile unsigned int tail; + volatile uint8_t head; + volatile uint8_t tail; }; +#if SERIAL_BUFFER_SIZE > 256 +#error Serial buffer size too big for head and tail pointers +#endif + #if defined(USBCON) ring_buffer rx_buffer = { { 0 }, 0, 0}; ring_buffer tx_buffer = { { 0 }, 0, 0}; |